Dr. Reinhard Hoeppli (1893—1973), a well-known Swiss medical parasitologist, completed his clinical training in Germany, obtained a doctorate in clinical pathology related to parasites, and later conducted nematology research in the United States. From 1930 to 1952, he served as the second Director of the Division of Parasitology at Peking Union Medical College (PUMC), and was responsible for the examination of parasite-related specimens in the PUMC Hospital. During his time at PUMC, Dr. Hoeppli discovered the famous "Splendore-Hoeppli Phenomenon", and contributed greatly to the advancement of medical parasitology and tropical diseases in China. In addition to his academic achievements, he made fruitful diplomatic efforts for PUMC in his capacity as Swiss consul during the occupation of PUMC by Japanese forces. This paper mainly reviews his great influence on the development of medical parasitology during the time at PUMC and his diplomatic contributions to PUMC.

Liu Shih-Hao, the founder of endocrinology in China, conducted research on the hypothalamic-pituitary-gonadal axis using rats as experimental subjects during his academic training in the United Kingdom in the late 1930s. This aspect of his work has not yet received due attention in prior scholarship. Accordingly, this article provides an overview of this series of studies and situates these relatively micro-level events in medical history within the broader context of Liu Shih-Hao's personal academic trajectory and the historical development of endocrinology at the time. Furthermore, by connecting these early investigations with Liu's later report, The Direction of Endocrinology Research Development, delivered more than two decades afterward, this paper explores the underlying linkages between them. Through this analysis, the study aims to elucidate the rich historiographical significance of these investigations, thereby contributing to a more comprehensive understanding of Liu Shih-Hao's academic legacy as well as the establishment and evolution of endocrinology in China.

The Unison(1924) was a yearbook assembled and published by the students of the Peking Union Medical College (PUMC), in honor of the first graduation of PUMC. It comprehensively introduced the organizational history, board of trustees and administration, departments and faculty, medical and nursing classes, student organizations and activities in PUMC. It also published school calendar and songs, alumni record, poems, drama scripts written by PUMC students. It is a comprehensive and systematic record of PUMC and Peking Union Medical College Hospital (PUMCH) in 1924, providing rich and valuable details in regards to academic and spiritual lives of faculty and students. Compiled during the early years of PUMC and PUMCH, the book also contributes to the formation of PUMC and PUMCH culture. It advocates for a spirit of science and humanity that has significantly influenced the cultivation and development of medical humanistic spirit in China.

The first reported case of insulinoma in our country, published on Journal of Clinical Investigation in 1936, was the 18th reported case worldwide. It included a comprehensive 14-page medical record of social service department and its attachments. The patient came from Peking Union Medical College Hospital(PUMCH) and the document objectively described the in-hospital visits and follow-up work for this case, revealing the visitation procedure of social service department. It also highlighted the close relationship between social service department and clinical doctors at that time, and the highly internationalized management of PUMCH.

MA Yueh-ch'ing (1906—1984), graduated from Peking Union Medical College in 1934, and became the first Chinese anesthetist hired by Peking Union Medical College Hospital in 1939. Based on the development and historical background of global anesthesiology, this article briefly introduces MA Yueh-ch'ing's personal experience and major achievements in anesthesiology.

Since the outbreak of coronavirus disease 2019 (COVID-19), a number of COVID-19 related thyroid disorders have been reported, including subacute thyroiditis, autoimmune thyroid disease, non-thyroidal illness syndrome and some unexplained thyroid dysfunction. This review aimed to summarize clinical characteristics of COVID-19 related thyroid disorders and to discuss some possible mechanisms.